MAGNET 🧲🧲 🧲 MCQ(GOVT JOBS)
MAGNET MCQ (GOVT JOBS) MAGNET An item or substance that generates a magnetic field is called a magnet. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that attracts or repels other magnetic materials, such as iron. Magnets have two poles, typically referred to as the north (N) and south (S) poles. Magnets can be naturally occurring, like lodestone, or they can be manufactured. They come in various types, including: 1. ** Permanent Magnets **:Over time, these hold onto their magnetic qualities. Neodymium, samarium-cobalt, and ferrite are typical materials. 2. ** Temporary Magnets* *: When placed in a strong magnetic field, these behave like permanent magnets; but, when the field is withdrawn, they become less magnetic. 3. ** Electromagnets **: These are created by running an electric current through a coil of wire, often wrapped around a core made of a magnetic material like iron. The magnetic field van...